Gradle plugin: use PatternSet instead of FileCollection for inputs

.github/workflows/build_and_test.yml

@@ -37,6 +37,13 @@ jobs:
           path: diktat-ruleset/target/diktat-*.jar
           # no need to store artifact longer, it is used only by dependant jobs
           retention-days: 1
+      - name: Upload gradle reports
+        if: ${{ failure() }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: gradle-test-report-${{ runner.os }}
+          path: 'diktat-gradle-plugin/build/reports/'
+          retention-days: 1
 
   run_diktat_from_CLI:
     name: Run diktat via CLI
@@ -110,7 +117,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ ubuntu-latest, windows-latest, macos-latest ]
+        os: [ windows-latest, macos-latest ]
     steps:
       - uses: actions/checkout@v2.3.4
       - name: Set up JDK 11

README.md

@@ -133,9 +133,11 @@ apply(plugin = "org.cqfn.diktat.diktat-gradle-plugin")
 You can then configure diktat using `diktat` extension:
 ```kotlin
 diktat {
-    inputs = files("src/**/*.kt")  // file collection that will be checked by diktat
+    inputs {
+        include("src/**/*.kt")  // path matching this pattern (per PatternFilterable) that will be checked by diktat
+        exclude("src/test/kotlin/excluded/**")  // path matching this pattern will not be checked by diktat
+    }
     debug = true  // turn on debug logging
-    excludes = files("src/test/kotlin/excluded")  // these files will not be checked by diktat
 }
 ```
 

diktat-gradle-plugin/build.gradle.kts

@@ -29,7 +29,7 @@ repositories {
 // default value is needed for correct gradle loading in IDEA; actual value from maven is used during build
 val ktlintVersion = project.properties.getOrDefault("ktlintVersion", "0.43.0") as String
 val diktatVersion = project.version.takeIf { it.toString() != Project.DEFAULT_VERSION } ?: "0.5.2"
-val junitVersion = project.properties.getOrDefault("junitVersion", "5.7.0") as String
+val junitVersion = project.properties.getOrDefault("junitVersion", "5.8.1") as String
 val jacocoVersion = project.properties.getOrDefault("jacocoVersion", "0.8.7") as String
 dependencies {
     implementation(kotlin("gradle-plugin-api"))
@@ -40,6 +40,7 @@ dependencies {
         exclude("org.jetbrains.kotlin", "kotlin-stdlib-jdk7")
         exclude("org.jetbrains.kotlin", "kotlin-stdlib")
         exclude("org.jetbrains.kotlin", "kotlin-stdlib-common")
+        exclude("org.slf4j", "slf4j-log4j12")
     }
 
     testImplementation("org.junit.jupiter:junit-jupiter-api:$junitVersion")
@@ -49,6 +50,8 @@ dependencies {
 val generateVersionsFile by tasks.registering {
     val versionsFile = File("$buildDir/generated/src/generated/Versions.kt")
 
+    inputs.property("diktat version", diktatVersion)
+    inputs.property("ktlint version", ktlintVersion)
     outputs.file(versionsFile)
 
     doFirst {
@@ -72,7 +75,6 @@ tasks.withType<KotlinCompile> {
         languageVersion = "1.3"
         apiVersion = "1.3"
         jvmTarget = "1.8"
-        useIR = false  // for compatibility with older gradle
     }
 
     dependsOn.add(generateVersionsFile)
@@ -93,7 +95,6 @@ java {
 
 // === testing & code coverage, jacoco is run independent from maven
 val functionalTestTask by tasks.register<Test>("functionalTest")
-val jacocoMergeTask by tasks.register<JacocoMerge>("jacocoMerge")
 tasks.withType<Test> {
     useJUnitPlatform()
 }
@@ -102,7 +103,7 @@ jacoco.toolVersion = jacocoVersion
 // === integration testing
 // fixme: should probably use KotlinSourceSet instead
 val functionalTest = sourceSets.create("functionalTest") {
-    compileClasspath += sourceSets.main.get().output + configurations.testRuntimeClasspath
+    compileClasspath += sourceSets.main.get().output + configurations.testRuntimeClasspath.get()
     runtimeClasspath += output + compileClasspath
 }
 tasks.getByName<Test>("functionalTest") {
@@ -123,25 +124,21 @@ tasks.getByName<Test>("functionalTest") {
             Thread.sleep(5_000)
         }
     }
-    finalizedBy(jacocoMergeTask)
+    finalizedBy(tasks.jacocoTestReport)
 }
 tasks.check { dependsOn(tasks.jacocoTestReport) }
 jacocoTestKit {
     applyTo("functionalTestRuntimeOnly", tasks.named("functionalTest"))
 }
-tasks.getByName("jacocoMerge", JacocoMerge::class) {
-    dependsOn(functionalTestTask)
+tasks.jacocoTestReport {
+    dependsOn(tasks.withType<Test>())
     executionData(
         fileTree("$buildDir/jacoco").apply {
             include("*.exec")
         }
     )
-}
-tasks.jacocoTestReport {
-    dependsOn(jacocoMergeTask)
-    executionData("$buildDir/jacoco/jacocoMerge.exec")
     reports {
         // xml report is used by codecov
-        xml.isEnabled = true
+        xml.required.set(true)
     }
 }

diktat-gradle-plugin/settings.gradle.kts

@@ -3,4 +3,4 @@ pluginManagement {
         mavenCentral()
         gradlePluginPortal()
     }
-}
+}

diktat-gradle-plugin/src/functionalTest/kotlin/org/cqfn/diktat/plugin/gradle/DiktatGradlePluginFunctionalTest.kt

@@ -8,8 +8,6 @@ import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.Assertions
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
-import org.junit.jupiter.api.condition.DisabledOnOs
-import org.junit.jupiter.api.condition.OS
 import java.io.File
 
 class DiktatGradlePluginFunctionalTest {
@@ -46,7 +44,7 @@ class DiktatGradlePluginFunctionalTest {
         buildFile.appendText(
             """${System.lineSeparator()}
                 diktat {
-                    inputs = files("src/**/*.kt")
+                    inputs { include("src/**/*.kt") }
                     reporterType = "json"
                     output = "test.txt"
                 }
@@ -69,7 +67,7 @@ class DiktatGradlePluginFunctionalTest {
         buildFile.appendText(
             """${System.lineSeparator()}
                 diktat {
-                    inputs = files("src/**/*.kt")
+                    inputs { include("src/**/*.kt") }
                 }
             """.trimIndent()
         )
@@ -88,61 +86,37 @@ class DiktatGradlePluginFunctionalTest {
         buildFile.appendText(
             """${System.lineSeparator()}
                 diktat {
-                    inputs = files("src/**/*.kt")
-                    excludes = files("src/**/Test.kt")
+                    inputs {
+                        include("src/**/*.kt")
+                        exclude("src/**/Test.kt")
+                    }
                 }
             """.trimIndent()
         )
         val result = runDiktat(testProjectDir)
 
         val diktatCheckBuildResult = result.task(":$DIKTAT_CHECK_TASK")
         requireNotNull(diktatCheckBuildResult)
-        Assertions.assertEquals(TaskOutcome.SUCCESS, diktatCheckBuildResult.outcome)
+        Assertions.assertEquals(TaskOutcome.NO_SOURCE, diktatCheckBuildResult.outcome)
     }
 
     @Test
     fun `should not run diktat with ktlint's default includes when no files match include patterns`() {
         buildFile.appendText(
             """${System.lineSeparator()}
                 diktat {
-                    inputs = files("nonexistent-directory/src/**/*.kt")
+                    inputs { include ("nonexistent-directory/src/**/*.kt") }
                 }
             """.trimIndent()
         )
         val result = runDiktat(testProjectDir, arguments = listOf("--info"))
 
-        // if patterns in gradle are not checked for matching, they are passed to ktlint, which does nothing
         val diktatCheckBuildResult = result.task(":$DIKTAT_CHECK_TASK")
         requireNotNull(diktatCheckBuildResult)
-        Assertions.assertEquals(TaskOutcome.SUCCESS, diktatCheckBuildResult.outcome)
+        Assertions.assertEquals(TaskOutcome.NO_SOURCE, diktatCheckBuildResult.outcome)
         Assertions.assertFalse(
             result.output.contains("Skipping diktat execution")
         )
-        Assertions.assertFalse(
-            result.output.contains("Inputs for $DIKTAT_CHECK_TASK do not exist, will not run diktat")
-        )
-    }
-
-    @Test
-    fun `should not run diktat with ktlint's default includes when no files match include patterns - 2`() {
-        buildFile.appendText(
-            """${System.lineSeparator()}
-                diktat {
-                    inputs = fileTree("nonexistent-directory/src").apply { include("**/*.kt") }
-                }
-            """.trimIndent()
-        )
-        val result = runDiktat(testProjectDir, arguments = listOf("--info"))
-
-        val diktatCheckBuildResult = result.task(":$DIKTAT_CHECK_TASK")
-        requireNotNull(diktatCheckBuildResult)
-        Assertions.assertEquals(TaskOutcome.SUCCESS, diktatCheckBuildResult.outcome)
-        Assertions.assertTrue(
-            result.output.contains("Skipping diktat execution")
-        )
-        Assertions.assertTrue(
-            result.output.contains("Inputs for $DIKTAT_CHECK_TASK do not exist, will not run diktat")
-        )
     }
 
     @Test

diktat-gradle-plugin/src/functionalTest/kotlin/org/cqfn/diktat/plugin/gradle/DiktatGradlePluginMultiprojectFunctionalTest.kt

@@ -33,7 +33,7 @@ class DiktatGradlePluginMultiprojectFunctionalTest {
 
         val diktatCheckRootResult = result.task(":$DIKTAT_CHECK_TASK")
         requireNotNull(diktatCheckRootResult)
-        Assertions.assertEquals(TaskOutcome.SUCCESS, diktatCheckRootResult.outcome) {
+        Assertions.assertEquals(TaskOutcome.NO_SOURCE, diktatCheckRootResult.outcome) {
             "Task for root project with empty sources should succeed"
         }
 

diktat-gradle-plugin/src/main/kotlin/org/cqfn/diktat/plugin/gradle/DiktatExtension.kt

@@ -1,12 +1,19 @@
 package org.cqfn.diktat.plugin.gradle
 
 import org.gradle.api.file.FileCollection
+import org.gradle.api.tasks.InputFile
+import org.gradle.api.tasks.PathSensitive
+import org.gradle.api.tasks.PathSensitivity
+import org.gradle.api.tasks.util.PatternFilterable
+import org.gradle.api.tasks.util.PatternSet
 import java.io.File
 
 /**
  * An extension to configure diktat in build.gradle(.kts) file
  */
-open class DiktatExtension {
+open class DiktatExtension(
+    private val patternSet: PatternSet
+) {
     /**
      * Boolean flag to support `ignoreFailures` property of [VerificationTask].
      */
@@ -29,18 +36,31 @@ open class DiktatExtension {
     var output: String = ""
 
     /**
-     * Path to diktat yml config file. Can be either absolute or relative to project's root directory.
-     * Default value: `diktat-analysis.yml` in rootDir.
+     * Paths that will be excluded from diktat run
      */
-    lateinit var diktatConfigFile: File
+    @Deprecated("Configuration via inputs/excludes is unsupported, use inputs(Action)")
+    var excludes: FileCollection? = null
 
     /**
-     * Paths that will be excluded from diktat run
+     * Paths that will be scanned for .kt(s) files
      */
-    lateinit var excludes: FileCollection
+    @Deprecated("Configuration via inputs/excludes is unsupported, use inputs(Action)")
+    var inputs: FileCollection? = null
 
     /**
-     * Paths that will be scanned for .kt(s) files
+     * Path to diktat yml config file. Can be either absolute or relative to project's root directory.
+     * Default value: `diktat-analysis.yml` in rootDir.
+     */
+    @get:InputFile
+    @get:PathSensitive(PathSensitivity.RELATIVE)
+    lateinit var diktatConfigFile: File
+
+    /**
+     * Configure input files for diktat task
+     *
+     * @param action configuration lambda for `PatternFilterable`
      */
-    lateinit var inputs: FileCollection
+    fun inputs(action: PatternFilterable.() -> Unit) {
+        action.invoke(patternSet)
+    }
 }

diktat-gradle-plugin/src/main/kotlin/org/cqfn/diktat/plugin/gradle/DiktatGradlePlugin.kt

@@ -6,6 +6,7 @@ import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.artifacts.ExternalModuleDependency
 import org.gradle.api.attributes.Bundling
+import org.gradle.api.tasks.util.PatternSet
 
 /**
  * Plugin that configures diktat and registers tasks to run diktat
@@ -16,12 +17,13 @@ class DiktatGradlePlugin : Plugin<Project> {
      * @param project a gradle [Project] that the plugin is applied to
      */
     override fun apply(project: Project) {
-        val diktatExtension = project.extensions.create(DIKTAT_EXTENSION, DiktatExtension::class.java).apply {
-            inputs = project.fileTree("src").apply {
-                include("**/*.kt")
-            }
+        val patternSet = PatternSet()
+        val diktatExtension = project.extensions.create(
+            DIKTAT_EXTENSION,
+            DiktatExtension::class.java,
+            patternSet
+        ).apply {
             diktatConfigFile = project.rootProject.file("diktat-analysis.yml")
-            excludes = project.files()
         }
 
         // only gradle 7+ (or maybe 6.8) will embed kotlin 1.4+, kx.serialization is incompatible with kotlin 1.3, so until then we have to use JavaExec wrapper
@@ -43,8 +45,8 @@ class DiktatGradlePlugin : Plugin<Project> {
             configuration.dependencies.add(project.dependencies.create("org.cqfn.diktat:diktat-rules:$DIKTAT_VERSION"))
         }
 
-        project.registerDiktatCheckTask(diktatExtension, diktatConfiguration)
-        project.registerDiktatFixTask(diktatExtension, diktatConfiguration)
+        project.registerDiktatCheckTask(diktatExtension, diktatConfiguration, patternSet)
+        project.registerDiktatFixTask(diktatExtension, diktatConfiguration, patternSet)
     }
 
     companion object {